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Communication: FOURTH PERIOD

A randomized 25 question test from a pool of 761 questions, good luck!
Which of the answers below best represents the additional requirements to allow protocol conversion?
Digital signals are, either specific or transitory, voltage levels represent states of logic. Which of the signal encoding methods below uses the conversion of dc voltage levels to ac to represent logic states?
Which answer below is best described as the RS-232 standard for voltage range to receive a "Space"?
There are two characteristics that are defined by the classifications of the IPv4 networks. Which of the answers below contains both of those characteristics?
Providing power to remote sites in a SCADA system has several difficulties associated with it. Which of the answers below would be best defined as one that is power generating 24 hours of the day under the right conditions?
There are several different network access methods available to wireless Ethernet. Which of the methods below is the one used by wireless Ethernet?
In IPv4, if you are using a static IP address assignment, which of the actions from the answers below, are you preforming?
IPv4 has several distinct classifications. Which of the answers below would best describe how those classifications are determined using the address?
Which component of a wired Ethernet network has provisions for interfacing with the OSI model physical and data link layer?
Which of the answers below best reflects a guided medium?
There has to be a way for data to be communicated to the systems I/O for a HMI application to be effective. Which of the terms below best represents the pool of information for this communication?
IPv4 network classes can also be defined by the default subnet masks that they use. If the subnet mask was 255.255.0.0, which of the classes below would be used?
In IPv4, if you are using a static IP address assignment, which of the actions from the answers below, are you preforming?
Which of the recommended standards below is best describes as a DTE to DCE connection only?
Modbus has standard command codes to allow the master to access information from it's slaves. Which of the commands below would be used to read the input status of coils on a slave device ?
Which of the data transmission modes below best is described as a one way transmission?
IPv4 network classes can also be defined by the default subnet masks that they use. If the subnet mask was 255.0.0.0, which of the classes below would be used?
Each network layer for a DCS has it's own specialized equipment or software. Which of the layers below would make use of firewall in its connection to the control network?
There are a collection of standards that defines the access control for wireless Ethernet. Which one of the answers below is the standard for initiating a WLAN?
There are several layers in the DCS architecture. Which of the levels below would have direct control over the systems FCEs?
There are many options to choose from for alarm attributes. Which of the following alarm attributes would best be used when a process regularly exceeds it's limits for a brief period of time?
There are many different software programs that are commonly used by a DCS. Which of the programs below would allow observation and control of the plant?
With any GUI, there are opportunities to use gathered data visually. Which of the methods below would be best described as one that would allow an operator to anticipate the tendencies of a process by the creation of a short term measurement values plot?
All the wired network components interact with ISO layers. Which of the answers below reflects the ISO layers that the bridge interacts with?
In the protocol specifications of Modbus, there are only four types of registers that can be accessed by the master. Which of the answers below expresses the register size and permissions of a holding registers?